Aircraft



July 14, 1931. c QHLR|H 1,814,957

AIRCRAFT Filed Dec. 13, 1929 Y 3 Sheets-Sheet l ATTORNEY 0 July 14, 1931. QHLR|H 1,814,957

AIRCRAFT Filed Dec. 13. 192 9 3 Sheets-Sheet 2 INVENTOR ATTORNEY w Jul 14, 1931. c. H. OHLRICH 1,314,957

AlRCRAFT Filed Dec, 15, 1929 3 Sheets-Sheet 3 INVENTOR Patented July 14, 1931 1 Um'ren rates rt OFFECE CHARLES H. OHLRICI-LOF PHILADELPHIA, PENNSYLVANIA, Assrsnoa or ONEJIALF TO LOUIS W. HUMMEL, OFNPI-IILADEIQIHIA,"PENNSYLVANIA AIRCRAFT Application filed DecemberlS, 1929. Serial No. 413,857.

the propellers rotateunder and toward'each other, especially 'on the rise of the blades,

1 which then start to assume horizontal positions as the propellers rotateover and away from each other, the blades when moving downwardly assuming full horizontal positions and act on the air, causing ascension of 15 the craft,

Another purpose 1s to provide an improved frame made rigid with the, fuselage for 20 the motor, for the purpose of imparting j the support of the propellers, in conjunction with gearing, operatively associated with movement to the propellers. Another purpose is to provide a housing for the gearing between the propeller shafts and the motor shaft.

is that the blades of each propeller include gearing with the propeller shaft, so as to cause the blades to feather the air when the propellers are rotating under and toward I so each other, and then gradually move into horizontal positions, and gradually :back into feathering positions, so that the blades will act upon the air and cause ascension of the craft. 7 5 A further feature is the provision of housings for the gears between the blades and the propeller shafts, and which housings contain oil, to keep the gearing well lubricated, said I housing also serving to'protect the gearings I 9 against weather conditlons.

A still further purpose is .to provide a craft equipped with similar propellers for causing the aircraft to travel forwardly. V

g It is'to be understood that the particulars herein given are in no way, limitative, and that while still keeping within the scope of the invention, any desired modification of details and proportions may be made in the construction of the appliance according to 150 circumstances. I

Another feature of this type of aircraft The invention comprises further features and combination of parts to be hereinafter set forth, shown in the drawings andclaimed. In the drawings: H Figure 1 is a view'in sideelevation show ing the aircraft constructed in accordance with the invention.

Figure 2 is aplan view of'same.

Figure 8 1s a sectional view on line 3-3 of Figure 2 through the gear housing at the front of the aircraft. e v

Figure t is a sectional view through. one of the gear housings at the rear of each pro peller. v 1 f 1 Referring to the drawings, 1 identifiesthe fuselage of the aircraft and 2 isa frame made rigid with the fuselage, said frame having bearings Sefor the propellerishafts A and 5 and 6 and 7. Theshaftse and 5 carry propellers 8, and 9, while the shaftsG and 7 carry propellers l0 and 11. f i V The propellers 8 and 9 operate under and toward each other as indicated by the arrows I 12, causing ascension of the craft, while the propellers 10 and 11 operate forwardly and toward each other for the purpose of causing the craft, to travel forwardly, arrows 13 in; dicating the direction of movement. i The fuselage carries a motor shaft 14 hav- A ing a gear 15, meshing with agearv 16011 the row-Mama of the shaft 17, which in turn is gears from the weather.- e

The rear ends of the propeller shafts-i and 5 carry bevel pinions 19.. Each of the propellers 8 and 9 consist of cross pieces 20, v in bearings 21- of which the pintles 22.0f the propellerblades 8 and9 are mounted. The

cross pieces at the rear-of the 'propellers 8 and 9 have bearings for shafts 23, with bevel gearsQAon their adjacent ends and bevel gears 25 on their remote ends. The acent beveledgears 24C meshwiththe beveled gears iltr ethe we b v -gees .25 mal cated, but thehousing serving to protectthe with beveled pinions 26 on the rear pintles of the blades.

By the above gearing and the gearing at the forward ends of the blades including the gear 15 power istransmitted to the propellers and to the blades, the gearing with the rear of'the blades being of such ratio as to cause the propellers to move under and toward: each other, and thenoverand ontward ly away from eaeh other, the blades inmoving toward and then upwardly acting to feather the air, and then act outwardly and downwardly on the air, hence causing the aircraft to ascend. i' 1 The propeller shafts 7 are connected by bevel gears 7a to certain gears of said train of ears l7a,h owever the propellers 10 and 11 having'similar gearing act to propel the aircraft forwardly.

Suitable clutch mechanisms are provided, one on each of the propeller shafts 7 and one on' the shaft 17, so that when one of the clutch mechanisms 27 is out of gear and the other clutch mechanism in gear, the'propellers for causing ascension of thecraft are operated,.and whenthe craft has reach-ed the height desired 'by'the pilot the clutch mechanism which is out of gear is thrown into gear, causing the other propellers to impart forward travel to the craft. hjllhe aircraft is equipped with the usual wings as shown, and also the usual stabilizin members. i 7

l'h'e invention having been set forth, w at is claimed is:

1. In an aircraft, the combination with a fuselage having a motor and a motor shaft, of a frame rigid with the fusela e, ascension propellers operativelymounted on and associated with the frame and gearing operatively 'connecting the propellers with the motor shaft, ,eac h of said propellers comprising a propeller shaft having cross pieces atits ends, blades' mounted in said cross pie ces, gearing operatively connecting the blades of each propeller with the propeller shaft, whereby the propellers may rotate underand toward each other thenupwardly and outwardly from each-other and then down- "wardly, the blades in ascending substantialto moving under and towardeach other 'acti'ng'to feather the air, and housingsfor the forward and rear gearing and adapted to contain oil or otherlubricant tocause free operationof the gearing. r Y w In an aircraft, the combination with a fns-ie'lage having a motor and a motor shaft,

of a frame on the fuselage, ascension propellers carried by the frame and beinggeared to-the motor shaft, said propellers comprising blades, and means inter-gearing the blades of each propeller,wherebytheblades maymo ve under and toward each'oc-iier, up vs'rar'dly and outwardly away from each-other, and propelling means operatively connected 1:' -ieces ofea-ch propeller being hollow and carrying oil, gearing in each hollow cross piece andinterconnecting the propeller shaft and said propellers 'to insure freedom of movement, and gearing in the oil housing and connecting the motor shaft and the'propeller shafts, thereby insuring freedomJof movement of the parts between the-motorshaft and the propellers; V

4. an aircraft, the'combination with a fuselage having an oil housing at its forward portion and a motor and a motor shaft, the latter passing through the housing, of a frame on the fuselage, ascension propulsion means arranged in said 'frame and including horizontal shafts, forward traveling propulsion means mounted in said frame and having vertical shafts, and gearing means in the oilhousing and operatively connecting all of said shafts of said propulsion means, thereby insuring free movement oft he gearing means.

In testimony whereof he allixes his signa ture.

CHARLES, H. OHLRICH. 

